<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>测试</title>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel="stylesheet">
</head>
<body>
   <script type="text/javascript">
   	function sloppyFunc(){
   		'use strict'
   		var sloppyVar = 123;
   	}
   	sloppyFunc();
   	// console.log(sloppyVar);
   </script> 
</body>
</html>